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Monday, 5 January 2015

Atkinson Walker Steam Tractor

So here's a project I've already got on the go, albeit progress has been rather slow the last couple of months. I had a Halling chassis and having read the book on the Redlake Tramway, I thought an Atkinson Walker Steam Tractor would be an interesting model. These were vertical-boilered chain-driven locomotives, like the better known Sentinals they used road-vehicle ideas from the time, to make efficient and cheap shunting locomotives. Most were standard gauge but two were built to 3' gauge - the more famous one ended up on the County Donegal Railway in Ireland, where later rebuilt as a Diesel it was named Phoenix. More about that here, where I found this picture of the Redlake loco.

I'd wondered about a scratch-build in plasticard, which shouldn't be too hard apart from the curved corners. I might then have scaled down the body slightly from the 3' gauge versions, however looking at the dimensions I figured that although large, I could just about get away with it in 009. So to make life easier I picked up the Worsley Works scratch-aid kit at EXPO-NG.

As usual for these kits there's some etches for the body - and that's it, no under-frame parts, details, or instructions. The parts are obvious enough though, once I'd figured that the half-etch rebates in the top and bottom of the sides were to go at the outside, and allow beading to be added. So first I cut a hole in the footplate for the chassis to fit, then with the sides carefully curved around and soldered to the footplate and the tank-tops I found some 0.5mm brass wire that fitted into the rebate.

Bending to size, fitting, and soldering the wire was not a little fiddly! Some miniature clothes-pegs (no it isn't a 16mm scale model) from my wife's card-making oddments came in useful.

So the lower body looks OK, though there may be some more cleaning up of excess solder. I've got hand-rails to add in the doorways, then the upper body (windows) and roof to solder on. The roof will restrict access, though the body will be floppy without it, so I need to figure out what's going on below and inside first!

I have added a couple of brackets inside from scrap brass to centre the chassis in place, but I haven't yet figured out how to attach it. I tried making up brass clips to fit into the ends of the chassis, but that's tricky. I also need to make the underframe, which may be narrower than the motor, so I'm thinking of making frames and buffer-beams as a plasticard sub-assembly to which the chassis clips, and can be bolted to the body. Those springs are quite distinctive, any suggestions for suitable mouldings?

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Welcome to my Blog

If you are interested in model railways, particularly in narrow gauge, or small (micro) layouts, then I hope you will find this site interesting. I try to update it periodically with news of my current models and layouts, and anything else model-railway related (and sometimes not!). I usually model in 009 scale (1:76 or 4mm/ft using 9mm gauge track), although I have recently dabbled in 014 (1:43 or 7mm/ft on 14mm gauge track) as well. For more on my current and past layouts click the the links to the pages below. If you have any comments or feedback, do let me know!

About Me

I have been building model railways since I was a teenager, mostly in 009 scale though I have also worked in 00, and more recently 014.
I am a member of the 009 society (which is highly reccommended if you model in 009 or similar) and of the local area group of the society in Sussex, the Sussex Downs group.
Away from model railways, I am a chartered engineer working in the automotive industry, I am married with two small children to occupy most of my free time, and I am involved in the PA and technical things at my church. So I don't get a lot of time for model railway building!